Make newer GCCs happier: Removed unused variables.

src/mips/full-codegen-mips.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4032 matching lines @@
       __ CallStub(&stub);
       PrepareForBailoutBeforeSplit(TOS_REG, true, if_true, if_false);
       // The stub returns 0 for true.
       Split(eq, v0, Operand(zero_reg), if_true, if_false, fall_through);
       break;
     }
 
     default: {
       VisitForAccumulatorValue(expr->right());
       Condition cc = eq;
-      bool strict = false;
       switch (op) {
         case Token::EQ_STRICT:
-          strict = true;
-          // Fall through.
         case Token::EQ:
           cc = eq;
           __ mov(a0, result_register());
           __ pop(a1);
           break;
         case Token::LT:
           cc = lt;
           __ mov(a0, result_register());
           __ pop(a1);
           break;
@@ skipping 186 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS